先兆

先兆 [xiān zhào]

1. ■ foreboding; foregleam; omen; portent; sign; indication; {医} aura:

不祥的先兆 ill omen;

成功的先兆 an omen of success;

地震的先兆 indications of an impending earthquake;

战争的先兆 portents of war;

那被认为是一种不幸的先兆。 It is said to be an omen of misfortune.

乌云是下雨的明显先兆。 Black clouds are an unmistakable sign of coming rain.

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常用词组

1. ■ 先兆痉挛 protospasm;

2. ■ 先兆流产 threatened abortion;

3. ■ 先兆子痫 preeclampsia; toxemia of pregnancy